1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ef6707137a432c49bce3917b0aad351366662af4789b10f262c95984127670. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fca73910-0b68-48d8-af4d-cad1766ff495.json and https://artists.proofprofile.net/proofs/artist/fca73910-0b68-48d8-af4d-cad1766ff495.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21312bec5a4c40b15b0516e716896d90deffff980f3269ec40c67cf0f08a9a61. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN81948732.
Meliodas VS Escanor (Nanatsu No Taizai Rap)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x613da179ea55528c9e91c7e18f4dbee5f737bc90ba0d58e8bc541d9bdeaa7760. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFYZ2054324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802210c75e1f97364bba979355eec3862128c5724c44f397dd2d0ab6b480929e. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFYZ2096793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f601bfd19d16158b168fbf228db036772c81138b5959dde4bc62f6d64afb5a5. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ52011186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f9df0b0f808615d7061d123722d28bf9f54cd191ce1729b08cdee80614334e8. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN32012250.
Crazy Lovers 2 Nagito Komaeda & Himiko Toga Rap
Trío caza demonios VS Trío de la clase a
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ec3735c6d27a77196ed409750131ea25af353e695369b75598a9883f2a4481. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN92139945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8848124fba19517a8b074287ec11878f9f44beed6f54bee39bb9edc8f0c51b5. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWQ2171335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76092cd53a9a78056f673f18b9ad223031a9aee2459dc816f9f516239c394811. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAT2139179.
Five Night at Freddy's Security Breach Rap
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e478a868961435d2a1185c49fe06a1ad3e3e5a7072e3a978cfef76ca2b6677. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ32236514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb3179319d6a0e66cf516db240fb89ee49fcca1d4b4a1bcbed1895599459caa. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN62297529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd691c91aee58ab556adfe5d65ad9ec24bc5cb6965c1ed19e215992dc2c5c53e4. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN72264755.
Once VS Vecna (Stranger Things 4 Parte 1 Rap)
Once VS Vecna (Stranger Things 4 Parte 2 Rap)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7db56d145af29ae5aef955b68d2ce6216a5d6ee6fddbfe362d5b0568e88590. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWU2287012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x830b5e48f8f7fd93e7a8d1dc89fe40b99eef92965e735fad3f9d042c9dc6fb35. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB32276946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02045fcbb51ca044b03b0b5ec1c633c8c2b521ccedf6fe8086b83d9be0e244fc. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB42297252.
Jack el Destripador VS Hércules (Record of Ragnarok Rap)
Shiva vs Raiden (Record of Ragnarok Rap)
Deku Vigilante VS Lady Nagant Rap (Boku no Hero S.6)
Five Night at Freddy's Security Breach Ruin Rap
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69543f4b5e598f8c7197bba02a75042a10fc95b662f17a4b978f89854ee1bf2. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB92316353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631abfdf840a219787984758b6e365300accff9d76ed2b2ea387d3b19604383c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA72451603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab6f70d750fac6c285b54a6554707b6098e6b0357063b3b4fdf079f06433669. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFS2473768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae57309989351e27e85979a429296054d40165343d93a828a52b9561ff3b8846. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7M2469851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c43c2028366f0166618ce9f2edbef87a5ffe7cbea537b5d8c81b7920da59850. Chain 2 (Bitcoin): anchored in block 957653 (2026-07-12T04:35:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES82510217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe1abe17264ad56e3d121a1f56a6955ead1298f7907a21dd60530c58ee9d7e63. Chain 2 (Bitcoin): anchored in block 957661 (2026-07-12T05:37:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN52556414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa69d82b2896150a152ab55cb989d10fe399ba99285976703f61bae9ba6f764fb. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6G2583582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f966bebf9bd8677cd2949934e41bd2942572ac46aa9fd6615492d5a27ae55de. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWQ2569040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83732ec0fba17967e136c97fb63100c5578f85cda409ee54f5ba764be5ce1a68. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB22531375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1765e6695b189567d75805a1040ef1c86a8ed768c5c9948eaddacc4fcd304ef. Chain 2 (Bitcoin): anchored in block 958647 (2026-07-19T02:36:14Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB92563962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a5dd5175cc58f0c792842e33db24ff41cb695f2de69a259459a44fe93914e7. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFJ2502671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa0b35ee979a14e3d0bf7695a0b433f77303b2d46f2c62b81f42a9b4c6b05ec7. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFQ2513253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116847de0e9ccada3c539163d094d8cc4c8bfc91e66f2e69674f8b7da1694b17. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFS2530612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b19e6a46e8a90d128c3b4e30dc49e457b1c6ccefa71becfeaa2d1636e3f35a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT3FB2584114.
Pecados Capitales Rap (Hazbin Hotel & Helluva Boss)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66566610c122711266b88b13a4d38c98cc9e7b7e1ab822e2abf9bdeeb3c5df1c. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT6E92573664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb1cc326eafeb5d18ce417e6e4d56d0ea2c5b28bfdd4e4f1845a1bc903b3a78. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT6EE2532177.